Allow math expressions to be entered in dialogs

e.g. 100×112.5÷500
or 100*112.5/500
instead of 22.5

also support for natural log , base-10 ; whatever base-log

but what syntax to use?
or ln(0.5)÷ln(10)×10 = −3.010299957

also request for specifying changing amplitude
as direct factor, not just in db

using a calculator every so often
frustratingly slows down workflow

Nyquist Prompt:
To amplify by a (linear) factor of 3.142

(mult *track* 3.142)